纳米ZnO的温和液相法制备及其光催化性能

兰州理工大学学报 ›› 2022, Vol. 48 ›› Issue (4): 25-29.

纳米ZnO的温和液相法制备及其光催化性能

吕康乐, 宋俊密^*

甘肃省环境监测中心站, 甘肃兰州 730020

收稿日期:2021-12-01 出版日期:2022-08-28 发布日期:2022-10-09
通讯作者: 宋俊密(1983-),女,河北衡水人,硕士,高级工程师.Email:441366335@qq.com
基金资助:
甘肃省青年科技基金(20JR5RA123)

Preparation of nano-ZnO by gentle liquid phase method and its photocatalytic performance

LÜ Kang-le, SONG Jun-mi

Gansu Province Environmental Monitoring Center, Lanzhou 730020, China

Received:2021-12-01 Online:2022-08-28 Published:2022-10-09

摘要/Abstract

摘要： 以ZnCl₂作为锌源,采用液相法制备了由粒径约17 nm的氧化锌粒子组合而成的花状六方纤锌矿晶体结构的氧空位缺陷型ZnO纳米材料,对制备的ZnO纳米材料的结构、形貌和成分进行了表征,计算了其禁带宽度,并通过光催化降解亚甲基蓝研究了其光催化性能.结果表明:氧空位缺陷型ZnO纳米材料具有很好的结晶度和形貌,且禁带宽度为3.17 eV,低于普通ZnO的禁带宽度.当光催化降解亚甲基蓝溶液0.5、2.5 h时,降解率分别为20%和80%,降解速度是普通Ag纳米颗粒掺杂氧化锌的4倍,表明制备的氧空位缺陷型ZnO纳米材料具有优异的光催化性能.

关键词: 氧化锌, 纳米材料, 光催化, 有机污染物

Abstract: Using ZnCl₂ as the zinc source, a flower-like hexagonal wurtzite structure oxygen vacancy-deficient nano-ZnO material composed of zinc oxide particles with a particle size of about 17 nm was prepared by a liquid phase method. The structure, morphology and composition were characterized. The band gap of the prepared ZnO was calculated by UV-Vis absorption spectroscopy. Its photocatalytic properties were investigated using methylene blue. The results show that the oxygen vacancy defect ZnO nanomaterials have good crystallinity and morphology, and the band gap width is 3.17 eV, which is lower than that of ordinary ZnO. When photocatalytic degradation of methylene blue solution for 0.5 h and 2.5 h, the degradation rates are 20% and 80% respectively, and the degradation rate is 4 times higher than that of ordinary Ag nanoparticles doped zinc oxide, indicating that the prepared oxygen vacancy defect ZnO nanomaterials have excellent photocatalytic properties.

Key words: zinc oxide, nanomaterials, photocatalytic, organic pollutants

中图分类号:

TB34

吕康乐, 宋俊密. 纳米ZnO的温和液相法制备及其光催化性能[J]. 兰州理工大学学报, 2022, 48(4): 25-29.

LÜ Kang-le, SONG Jun-mi. Preparation of nano-ZnO by gentle liquid phase method and its photocatalytic performance[J]. Journal of Lanzhou University of Technology, 2022, 48(4): 25-29.

参考文献

[1] LIU M,LI J,BIAN R,et al.ZnO@Ti₃C₂ MXene interfacial Schottky junction for boosting spatial charge separation in photocatalytic degradation [J].Journal of Alloys and Compounds,2022,905:164025.
[2] JANGIR L K,BANSAL P,KUMARI Y,et al.Effective doping of Er³⁺ in ZnO nanoparticles to control its luminescentproperties [J].Macromolecular Symposia,2017,376(1):1700005.
[3] YAN L,LIU Y,YAN Y,et al.Improved plasmon-assisted photoelectric conversion efficiency across entireultraviolet-visible region based on antenna-on zinc oxide/silver three dimensional nanostructured films [J].Nano Research,2018,11(1):520-529.
[4] AHMAD M,AHMED E,HONG Z L,et al.Structural,optical and photocatalytic properties of hafnium doped zinc oxide nanophotocatalyst [J].Ceramics International,2013,39(8):8693-8700.
[5] 毛洪凯.改性氧化锌纳米光催化材料的制备及光催化性能研究 [D].镇江:江苏大学,2016.
[6] LIAO X,LIAO Q,ZHANG Z,et al.A highly stretchable ZnO@fiber-based multifunctional nanosensor forstrain/temperature/UV detection [J].Advanced Functional Materials,2016,26(18):3074-3081.
[7] HAN H V,HOA N D,TONG P V,et al.Single-crystal zinc oxide nanorods with nanovoids as highly sensitive NO₂,nanosensors [J].Materials Letters,2013,94(94):41-43.
[8] DONG S,ZHANG D,CUI H,et al.ZnO/porous carbon composite from a mixed-ligand MOF for ultrasensitive electrochemical immunosensing of C-reactive protein [J].Sensors and Actuators B: Chemical,2019,284:354-361.
[9] SANG K L,HWANG S H,KIM S,et al.Preparation of ZnO nanorods by microemulsion synthesis and their application as a CO gas sensor [J].Sensors & Actuators B Chemical,2011,160(1):94-98
[10] FENG W,HUANG P,WANG B,et al.Solvothermal synthesis of ZnO with different morphologies in dimethylacetamide media [J].Ceramics International,2016,42(2):2250-2256.
[11] JIAO C,TANG F,XUE M.Template synthesis of porous nano ZnO and its adsorption capability [J].Micro & Nano Letters,2017,12(7):466-469.
[12] CARVALHO R G,TAVARES M T S,OLIVEIRA F K F,et al.Preparation and photocatalytic properties of hexagonal-shaped ZnO:Sm³⁺,by microwave-assisted hydrothermal method [J].Journal of Materials Science Materials in Electronics,2017,28(11):1-8.
[13] HUSHAM M,HAMIDON M N,PAIMAN S,et al.Synthesis of ZnO nanorods by microwave-assisted chemical-bath deposition for highly sensitive self-powered UV detection application [J].Sensors & Actuators A Physical,2017,263(15):166-193.
[14] YAHAYA M,TAN S T,UMAR A A,et al.Synthesis of ZnO nanorod arrays by chemical solution and microwave method for sensor application [J].Key Engineering Materials,2014,605:585-588.
[15] TAGHIZADEH M T,KHELJAN N B,VATANPARAST M.Ultrasonic-assisted synthesis of ZnO/NiO nanocomposites and kinetic study of their photocatalytic activity[J].Journal of Materials Science,2018,29(2):978-984.
[16] TSAY C Y,FAN K S,CHEN S H,et al.Preparation and characterization of ZnO transparent semiconductor thin films by sol-gel method [J].Journal of Alloys & Compounds,2010,495(1):126-130.
[17] 李维学,高姗姗,戴剑锋,等.Cu/Al共掺ZnO光学性质的第一性原理计算 [J].兰州理工大学学报,2021,47(4):6-12.
[18] 李维学,薛晓峰,戴剑锋,等.Cu-Cd共掺杂ZnO电子结构与光学性质的第一性原理计算与分析 [J].兰州理工大学学报,2020,46(2):166-172.
[19] ZHANG J,SUN L,LIAO C,et al.A simple route towards tubular ZnO [J].Chemical Communications,2002(3):262-263.
[20] ZHANG H,YANG D,MA X,et al.Synthesis of flower-like ZnO nanostructures by an organic-free hydrothermal process [J].Nanotechnology,2004,15(5):622-626.
[21] 宋国利.纳米ZnO和稀土离子掺杂ZnO发光材料制备与发光机制 [M].北京: 中国科学技术出版社.2018.
[22] 宋国利,梁红,孙凯霞.纳米晶ZnO可见发射机制的研究 [J].光子学报,2004,33(4):485-488.
[23] 于富成,南冬梅,王博龙,等.Ag纳米颗粒修饰对La掺杂ZnO纳米棒光催化性能的影响 [J].兰州理工大学学报,2021,47(1):28-35.
[24] 陈艳敏,钟晶,陈锋,等.氟掺杂纳米TiO₂薄膜的低温制备及其光催化性能 [J].催化学报,2010,31(1):120-125.
[25] SUN S D,KONG C C,YOU H J,et al.Facet-selective growth of Cu-Cu₂O heterogeneous architectures [J].Cryst Eng Comm,2012(1):40-43.